Salt Mediated Self-Assembly of Poly(ethylene glycol)-Functionalized Gold Nanorods.
Journal
Scientific reports
ISSN: 2045-2322
Titre abrégé: Sci Rep
Pays: England
ID NLM: 101563288
Informations de publication
Date de publication:
30 Dec 2019
30 Dec 2019
Historique:
received:
10
10
2019
accepted:
16
12
2019
entrez:
1
1
2020
pubmed:
1
1
2020
medline:
1
1
2020
Statut:
epublish
Résumé
Although challenging, assembling and orienting non-spherical nanomaterials into two- and three-dimensional (2D and 3D) ordered arrays can facilitate versatile collective properties by virtue of their shape-dependent properties that cannot be realized with their spherical counterparts. Here, we report on the self-assembly of gold nanorods (AuNRs) into 2D films at the vapor/liquid interface facilitated by grafting them with poly(ethylene glycol) (PEG). Using surface sensitive synchrotron grazing incidence small angle X-ray scattering (GISAXS) and specular X-ray reflectivity (XRR), we show that PEG-AuNRs in aqueous suspensions migrate to the vapor/liquid interface in the presence of salt, forming a uniform monolayer with planar-to-surface orientation. Furthermore, the 2D assembled PEG functionalized AuNRs exhibit short range order into rectangular symmetry with side-by-side and tail-to-tail nearest-neighbor packing. The effect of PEG chain length and salt concentration on the 2D assembly are also reported.
Identifiants
pubmed: 31889079
doi: 10.1038/s41598-019-56730-2
pii: 10.1038/s41598-019-56730-2
pmc: PMC6937238
doi:
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
20349Subventions
Organisme : Basic Energy Sciences
ID : DE-AC02-07CH11358
Organisme : Basic Energy Sciences
ID : DE-AC02-07CH11358
Organisme : Basic Energy Sciences
ID : DE-AC02-07CH11358
Organisme : Basic Energy Sciences
ID : DE-AC02-07CH11358
Organisme : Basic Energy Sciences
ID : DE-AC02-07CH11358
Organisme : Basic Energy Sciences
ID : DE-AC02-07CH11358
Organisme : Basic Energy Sciences
ID : DE-AC02-07CH11358
Organisme : Basic Energy Sciences
ID : DE-AC02-07CH11358
Organisme : National Science Foundation
ID : NSF/CHE-1834750
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